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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2403.04054 |
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| _version_ | 1866914706119196672 |
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| author | Taylor, Quinn Starkman, Glenn D. Hinczewski, Michael Mihaylov, Deyan P. Silk, Joseph Pacheco, Jose de Freitas |
| author_facet | Taylor, Quinn Starkman, Glenn D. Hinczewski, Michael Mihaylov, Deyan P. Silk, Joseph Pacheco, Jose de Freitas |
| contents | The Hawking process results in a monotonic decrease of the black hole mass, but a biased random walk of the black hole angular momentum. We demonstrate that this stochastic process leads to a significant fraction of primordial black holes becoming extremal Kerr black holes (EKBHs) of one to a few Planck masses regardless of their initial mass. For these EKBHs, the probability of ever absorbing a photon or other particle from the cosmic environment is small, even in the cores of galaxies. Assuming that EKBHs are stable, they behave as cold dark matter, and can comprise all of the dark matter if they are formed with the correct initial abundance. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_04054 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Extremal Kerr Black Hole Dark Matter from Hawking Evaporation Taylor, Quinn Starkman, Glenn D. Hinczewski, Michael Mihaylov, Deyan P. Silk, Joseph Pacheco, Jose de Freitas General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics The Hawking process results in a monotonic decrease of the black hole mass, but a biased random walk of the black hole angular momentum. We demonstrate that this stochastic process leads to a significant fraction of primordial black holes becoming extremal Kerr black holes (EKBHs) of one to a few Planck masses regardless of their initial mass. For these EKBHs, the probability of ever absorbing a photon or other particle from the cosmic environment is small, even in the cores of galaxies. Assuming that EKBHs are stable, they behave as cold dark matter, and can comprise all of the dark matter if they are formed with the correct initial abundance. |
| title | Extremal Kerr Black Hole Dark Matter from Hawking Evaporation |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2403.04054 |